Provided are an organometallic compound, an organic light-emitting device including the same, and a diagnostic composition including the same. The organometallic compound is represented by Formula 1

M(L.sub.A).sub.n1(L.sub.B).sub.n2 wherein, in Formula 1, M is a transition metal, L.sub.A is a ligand represented by Formula 2A, L.sub.B is a ligand represented by Formula 2B,

##STR00001##

An imaging device includes a first electrode, a second electrode, a photoelectric conversion layer that is arranged between the first electrode and the second electrode and converts light to charge, and an electron blocking layer that is arranged between the first electrode and the photoelectric conversion layer and suppresses movement of electrons from the first electrode to the photoelectric conversion layer. The electron blocking layer contains carbon and an oxide of nickel. The carbon concentration in the electron blocking layer is 0.1 atom % or more and 1.3 atom % or less.

A method for manufacturing a photoelectric conversion element includes providing a base structure including a semiconductor substrate having a principal surface, a first electrode located on or above the principal surface, second electrodes which are located on or above the principal surface and which are one- or two-dimensionally arranged, and a photoelectric conversion film covering at least the second electrodes; forming a mask layer on the photoelectric conversion film, the mask layer being conductive and including a covering section covering a portion of the photoelectric conversion film that overlaps the second electrodes in plan view; and partially removing the photoelectric conversion film by immersing the base structure and the mask layer in an etchant.

A photoelectric conversion element including: a first electrode; a perovskite layer; a hole-transporting layer; and a second electrode, wherein the hole-transporting layer includes a compound represented by General Formula (1) or (1a) below;

##STR00001## where M represents an alkali metal; X.sub.1 and X.sub.2, which may be identical to or different from each other, each represent at least one selected from the group consisting of a carbonyl group, a sulphonyl group, and a sulfinyl group; and X.sub.3 represents at least one selected from the group consisting of a bivalent alkyl group, an alkenyl group, and an aryl group, and a hydrogen atom of the bivalent alkyl group, the alkenyl group, and the aryl group may be substituted with a halogen atom;

##STR00002## where M.sup.+ represents an organic cation; and X.sub.1, X.sub.2, and X.sub.3 have the same meanings as X.sub.1, X.sub.2, and X.sub.3 in the General Formula (1).

Provided are an organometallic compound, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound.

The present invention provides a solar cell and a method for manufacturing the same, the solar cell including a first electrode formed on a substrate, a nanocrystal layer including a plurality of nanocrystals formed on the first electrode so as to contact the first electrode, a hole transport layer formed on the first electrode so as to cover the plurality of nanocrystals, a photoactive layer formed on the hole transport layer, and a second electrode formed on the photoactive layer.

The invention concerns a method of manufacturing a photovoltaic module comprising at least two electrically connected photovoltaic cells, each photovoltaic cell (4.sub.i) being multi-layered structure disposed on a substrate (6) having down-web direction (X) and a cross-web direction (Y). The method comprises providing a plurality of spaced-apart first electrode strips (8.sub.i) over the substrate (6), each first electrode strip extending along the cross-web direction (Y), and providing, over the first electrode strips layer, at least one insulating strip (14a, 14b) of an insulator material extending along the down-web direction (X), each insulating strip defining a connecting area and an active area. A functional stack (20) comprising a full web coated layer of photoactive semiconductor material is formed over the first layer and within the active area. A plurality of spaced-apart second electrode strips (28.sub.i) are provided within the active area, each second electrode strip extending along the cross-web direction (Y), so as to form photovoltaic cells and a photovoltaic module is formed by electrically connecting at least two adjacent photovoltaic cells, by extending over the insulating strips (14a, 14b) electrical connection patterns to electrically connect, within the connecting area(s), the second electrode strip of an photovoltaic cell to the first electrode strip of an adjacent photovoltaic cell.

There is provided an imaging device including an upper electrode; a lower electrode; a photoelectric conversion layer disposed between the upper electrode and the lower electrode; and a first organic semiconductor material including an indolocarbazole derivative and disposed between the upper electrode and the lower electrode. Further, there is provided an electronic apparatus including an imaging device that includes an upper electrode; a lower electrode; a photoelectric conversion layer disposed between the upper electrode and the lower electrode; and a first organic semiconductor material including an indolocarbazole derivative and disposed between the upper electrode and the lower electrode.

A solid-state imaging device includes: a plurality of pixels each including a first electrode, an organic photoelectric conversion film, and a second electrode in this order on a substrate, the organic photoelectric conversion film including a first inclined surface on a side wall; and a first sealing film formed, on the plurality of pixels, to cover the side wall of the organic photoelectric conversion film and the second electrode.

Provided is a solar cell module including photoelectric conversion elements, wherein each of the photoelectric conversion elements includes a first substrate, and a first electrode, a hole blocking layer, an electron transport layer, a hole transport layer, a second electrode, and a second substrate on the first substrate, and a sealing member between the first substrate and the second substrate, and wherein, within at least two of the photoelectric conversion elements adjacent to each other, the hole-blocking layers are not extended to each other but the hole transport layers are in a state of a continuous layer where the hole transport layers are extended to each other.